:root{
  --ind-ink:#0E1A2B;
  --ind-ink-soft:#33445A;
  --ind-bg:#F4F7FB;
  --ind-surface:#FFFFFF;
  --ind-primary:#1559C4;
  --ind-primary-d:#0E3F8C;
  --ind-signal:#0FB5BA;
  --ind-energy:#FF7A1A;
  --ind-border:#D7E0EC;
  --ind-border-strong:#B9C7DA;
  --ind-muted:#5B6B7E;
  --ind-radius:14px;
  --ind-radius-sm:10px;
  --ind-header-h:64px;
  --ind-maxw:1180px;
  --ind-h2-inset:0px;
  --ind-shadow:0 8px 28px rgba(16,40,80,.08);
  --ind-shadow-sm:0 2px 10px rgba(16,40,80,.06);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;font-family:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  color:var(--ind-ink);background:var(--ind-bg);line-height:1.75;
  padding-top:var(--ind-header-h);font-size:16px;
}
a{color:var(--ind-primary);text-decoration:none;}
a:hover{color:var(--ind-primary-d);}
img{max-width:100%;display:block;}
h1,h2,h3,h4{color:var(--ind-ink);line-height:1.35;font-weight:700;}
.ind-container{max-width:var(--ind-maxw);margin:0 auto;padding:0 24px;}
.ind-main{min-height:60vh;}

/* ===== Header / Nav ===== */
.ind-header{position:fixed;top:0;left:0;right:0;height:var(--ind-header-h);z-index:120;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--ind-border);}
.ind-header-inner{max-width:var(--ind-maxw);margin:0 auto;height:100%;padding:0 24px;
  display:flex;align-items:center;gap:18px;}
.ind-brand{font-weight:800;font-size:18px;color:var(--ind-primary-d);white-space:nowrap;letter-spacing:.3px;}
.ind-nav{flex:1;display:flex;justify-content:flex-end;}
.ind-nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;}
.ind-nav-item{position:relative;}
.ind-nav-link,.ind-nav-item>a{padding:10px 14px;display:block;color:var(--ind-ink-soft);font-weight:600;border-radius:8px;}
.ind-nav-item>a:hover{background:var(--ind-bg);color:var(--ind-primary);}
.ind-has-sub{display:flex;align-items:center;}
.ind-nav-subtoggle{display:none;background:none;border:none;color:var(--ind-ink-soft);font-size:18px;cursor:pointer;padding:6px 8px;}
.ind-nav-sub{position:absolute;top:100%;left:0;min-width:170px;background:#fff;border:1px solid var(--ind-border);
  border-radius:12px;box-shadow:var(--ind-shadow);padding:8px;display:none;flex-direction:column;}
.ind-has-sub:hover .ind-nav-sub,.ind-has-sub:focus-within .ind-nav-sub{display:flex;}
.ind-nav-sub a{padding:8px 12px;border-radius:8px;font-size:14px;color:var(--ind-ink-soft);}
.ind-nav-sub a:hover{background:var(--ind-bg);color:var(--ind-primary);}
.ind-nav-toggle{display:none;background:none;border:1px solid var(--ind-border);border-radius:8px;
  font-size:22px;line-height:1;padding:4px 10px;cursor:pointer;color:var(--ind-ink);}

/* ===== Breadcrumb ===== */
.ind-breadcrumb{padding:18px 0 6px;}
.ind-crumb-list{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:0;padding:0;font-size:13.5px;color:var(--ind-muted);}
.ind-crumb-list a{color:var(--ind-muted);}
.ind-crumb-list a:hover{color:var(--ind-primary);}
.ind-crumb-sep{color:var(--ind-border-strong);}

/* ===== Layout grids ===== */
.ind-article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px;padding:8px 0 48px;align-items:start;}
.ind-list-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:36px;padding:8px 0 48px;align-items:start;}
.ind-page-wrap{padding:8px 0 48px;max-width:900px;}

/* ===== Content prose ===== */
.ind-prose h2{font-size:24px;margin:34px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--ind-primary);position:relative;}
.ind-prose h2::before{content:"";position:absolute;left:0;bottom:-2px;width:64px;height:2px;background:var(--ind-energy);}
.ind-prose h3{font-size:19px;margin:24px 0 10px;color:var(--ind-primary-d);}
.ind-prose p{margin:12px 0;}
.ind-prose ul,.ind-prose ol{padding-left:22px;margin:12px 0;}
.ind-prose li{margin:6px 0;}
.ind-prose strong{color:var(--ind-ink);}
.ind-content-main{max-width:820px;}

/* ===== Tables ===== */
.ind-content-main table,.ind-page-wrap table,table.ind-spec{
  width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px;background:#fff;
  border:1px solid var(--ind-border-strong);border-radius:10px;overflow:hidden;}
.ind-content-main table th,.ind-content-main table td,
.ind-page-wrap table th,.ind-page-wrap table td,
table.ind-spec th,table.ind-spec td{border:1px solid var(--ind-border);padding:9px 12px;text-align:left;vertical-align:top;}
.ind-content-main table th,table.ind-spec th{background:var(--ind-primary);color:#fff;font-weight:600;}
.ind-content-main table tr:nth-child(even) td,tbody tr:nth-child(even) td{background:#EEF4FB;}

/* blockquote (conclusion) */
.ind-prose blockquote{margin:18px 0;padding:14px 18px;background:#EAF2FF;border-left:4px solid var(--ind-primary);border-radius:0 10px 10px 0;color:var(--ind-ink-soft);}
.ind-prose blockquote p{margin:6px 0;}

/* time */
.ind-prose time{display:inline-block;font-size:13px;color:var(--ind-muted);margin:4px 0 10px;border:1px solid var(--ind-border);border-radius:20px;padding:2px 12px;background:#fff;}

/* ===== TOC panel ===== */
.ind-toc-aside{position:sticky;top:calc(var(--ind-header-h) + 16px);max-height:calc(100vh - var(--ind-header-h) - 32px);overflow:auto;}
.ind-toc-panel,.ind-cat-panel{border:1px solid var(--ind-border);border-radius:12px;background:#fff;box-shadow:var(--ind-shadow-sm);}
.ind-toc-panel[hidden],.ind-cat-panel[hidden]{display:none;}
.ind-toc-summary,.ind-cat-summary{font-weight:700;color:var(--ind-primary-d);padding:12px 16px;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;}
.ind-toc-summary::-webkit-details-marker{display:none;}
.ind-toc-summary::after,.ind-cat-summary::after{content:"▾";color:var(--ind-signal);transition:transform .2s;}
.ind-toc-panel:not([open]) .ind-toc-summary::after,.ind-cat-panel:not([open]) .ind-cat-summary::after{transform:rotate(-90deg);}
.ind-toc-list{margin:0;padding:6px 16px 16px;list-style:none;counter-reset:toc;font-size:14px;}
.ind-toc-list li{counter-increment:toc;margin:8px 0;padding-left:26px;position:relative;}
.ind-toc-list li::before{content:counter(toc);position:absolute;left:0;top:1px;width:18px;height:18px;border-radius:50%;
  background:var(--ind-bg);color:var(--ind-primary);font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:700;}
.ind-toc-list a{color:var(--ind-ink-soft);}
.ind-toc-list a:hover{color:var(--ind-primary);}

/* ===== Category side ===== */
.ind-cat-side .ind-category-list{list-style:none;margin:0;padding:8px 12px 16px;}
.ind-category-list li{margin:2px 0;}
.ind-category-list a{display:block;padding:8px 12px;border-radius:8px;color:var(--ind-ink-soft);font-weight:600;font-size:14.5px;}
.ind-category-list a:hover{background:var(--ind-bg);color:var(--ind-primary);}
.ind-cat-active>a,.ind-category-list li.ind-cat-active a{background:var(--ind-primary);color:#fff;}

/* ===== List / cards ===== */
.ind-cat-h1{font-size:30px;margin:6px 0 8px;}
.ind-cat-header{margin-bottom:18px;}
.ind-cat-desc{color:var(--ind-muted);margin:0 0 8px;}
.ind-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.ind-card-grid-3{grid-template-columns:repeat(3,1fr);}
.ind-card{display:block;background:#fff;border:1px solid var(--ind-border);border-radius:var(--ind-radius);padding:18px 20px;
  box-shadow:var(--ind-shadow-sm);transition:transform .15s,box-shadow .15s,border-color .15s;}
.ind-card:hover{transform:translateY(-3px);box-shadow:var(--ind-shadow);border-color:var(--ind-primary);}
.ind-card-title{font-size:17px;margin:0 0 8px;color:var(--ind-ink);}
.ind-card-desc{font-size:14px;color:var(--ind-muted);margin:0 0 10px;line-height:1.6;}
.ind-card-meta{font-size:12.5px;color:var(--ind-border-strong);}

/* ===== FAQ ===== */
.ind-faq{margin:30px 0 10px;border-top:2px solid var(--ind-border);padding-top:18px;}
.ind-faq-title{font-size:22px;margin:0 0 12px;}
.ind-faq-item{border:1px solid var(--ind-border);border-radius:10px;margin:10px 0;background:#fff;overflow:hidden;}
.ind-faq-item>summary{cursor:pointer;padding:13px 16px;font-weight:600;color:var(--ind-ink);list-style:none;display:flex;justify-content:space-between;align-items:center;}
.ind-faq-item>summary::-webkit-details-marker{display:none;}
.ind-faq-item>summary::after{content:"+";color:var(--ind-signal);font-size:18px;font-weight:700;}
.ind-faq-item[open]>summary::after{content:"−";}
.ind-faq-item>div{padding:0 16px 14px;color:var(--ind-ink-soft);}

/* ===== Home ===== */
.ind-hero{position:relative;background:linear-gradient(135deg,#0E1A2B 0%,#123A6B 60%,#0FB5BA 140%);color:#fff;overflow:hidden;}
.ind-hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:34px 34px;mask-image:radial-gradient(circle at 70% 30%,#000,transparent 75%);}
.ind-hero-inner{position:relative;padding:64px 0 72px;}
.ind-hero-kicker{letter-spacing:2px;font-size:13px;color:var(--ind-signal);font-weight:700;margin:0 0 12px;}
.ind-hero-title{font-size:38px;line-height:1.25;margin:0 0 16px;max-width:780px;}
.ind-hero-sub{font-size:17px;color:#D6E4F2;max-width:680px;margin:0 0 26px;}
.ind-hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.ind-btn{display:inline-block;padding:12px 24px;border-radius:30px;font-weight:700;font-size:15px;transition:.15s;}
.ind-btn-primary{background:var(--ind-energy);color:#fff;}
.ind-btn-primary:hover{background:#E96A08;color:#fff;}
.ind-btn-ghost{border:1px solid rgba(255,255,255,.5);color:#fff;}
.ind-btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

.ind-home-sections{padding:46px 0 60px;}
.ind-block{margin-bottom:48px;}
.ind-block-title{font-size:26px;margin:0 0 8px;}
.ind-block-lead{color:var(--ind-muted);margin:0 0 22px;max-width:760px;}
.ind-prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.ind-prod-card{background:#fff;border:1px solid var(--ind-border);border-radius:var(--ind-radius);padding:20px;box-shadow:var(--ind-shadow-sm);transition:.15s;border-top:3px solid var(--ind-primary);}
.ind-prod-card:hover{transform:translateY(-3px);box-shadow:var(--ind-shadow);}
.ind-prod-name{font-size:18px;margin:0 0 10px;color:var(--ind-primary-d);}
.ind-prod-desc{font-size:14px;color:var(--ind-muted);margin:0 0 12px;min-height:62px;}
.ind-prod-go{font-size:13.5px;font-weight:700;color:var(--ind-energy);}
.ind-kw-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.ind-kw{background:#fff;border:1px solid var(--ind-border);border-radius:30px;padding:8px 16px;font-size:14px;color:var(--ind-ink-soft);font-weight:600;}

.ind-baseline-layout{display:grid;grid-template-columns:1.4fr .9fr;gap:30px;align-items:start;}
.ind-baseline-list{list-style:none;margin:0;padding:0;}
.ind-baseline-list li{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--ind-border);}
.ind-baseline-field{friority:0;flex:0 0 160px;font-weight:700;color:var(--ind-primary-d);}
.ind-baseline-rule{flex:1;color:var(--ind-ink-soft);}
.ind-baseline-side{background:#fff;border:1px solid var(--ind-border);border-radius:var(--ind-radius);padding:20px;box-shadow:var(--ind-shadow-sm);}
.ind-side-title{font-size:18px;margin:0 0 12px;color:var(--ind-primary-d);}
.ind-scenario-list{list-style:none;margin:0;padding:0;}
.ind-scenario-list li{font-size:14px;color:var(--ind-ink-soft);margin:0 0 12px;line-height:1.6;}
.ind-scenario-list strong{display:block;color:var(--ind-ink);margin-bottom:2px;}
.ind-cta-block{background:linear-gradient(135deg,#0E1A2B,#123A6B);color:#fff;border-radius:18px;padding:36px;text-align:center;}
.ind-cta-block .ind-block-title{color:#fff;}
.ind-cta-block .ind-block-lead{color:#CFE0F2;margin-left:auto;margin-right:auto;}
.ind-cta-block .ind-btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}

/* ===== Archive ===== */
.ind-archive-groups{display:grid;grid-template-columns:1fr 1fr;gap:36px;}
.ind-archive-h{font-size:22px;margin:8px 0 14px;}
.ind-archive-sub{font-size:17px;color:var(--ind-primary-d);margin:18px 0 8px;}
.ind-archive-list{list-style:none;margin:0 0 6px;padding:0;columns:2;}
.ind-archive-list li{padding:4px 0;border-bottom:1px dashed var(--ind-border);break-inside:avoid;}
.ind-archive-list a{font-size:14px;}

/* ===== Footer ===== */
.ind-footer{background:#0B1626;color:#C7D4E4;margin-top:40px;}
.ind-footer-inner{max-width:var(--ind-maxw);margin:0 auto;padding:44px 24px 24px;}
.ind-footer-cols{display:grid;grid-template-columns:1fr 1fr 1fr 1.3fr;gap:28px;}
.ind-footer-h{font-size:15px;color:#fff;margin:0 0 14px;}
.ind-footer-col ul{list-style:none;margin:0;padding:0;}
.ind-footer-col li{margin:7px 0;}
.ind-footer-col a{color:#9FB2C8;font-size:14px;}
.ind-footer-col a:hover{color:var(--ind-signal);}
.ind-footer-contact p{font-size:14px;color:#9FB2C8;line-height:1.7;}
.ind-footer-bottom{border-top:1px solid #1C2A3E;margin-top:30px;padding-top:18px;}
.ind-footer-bottom p{margin:0;font-size:13px;color:#7E91A8;}
.ind-mail-text{color:var(--ind-signal);}

/* ===== Floating capsule ===== */
.ind-capsule{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:130;display:flex;flex-direction:column;gap:10px;}
.ind-cap-btn{width:54px;height:54px;border:none;border-radius:30px;cursor:pointer;background:linear-gradient(135deg,var(--ind-primary),var(--ind-signal));
  color:#fff;box-shadow:var(--ind-shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;transition:.15s;}
.ind-cap-btn:hover{transform:scale(1.06);background:linear-gradient(135deg,var(--ind-energy),var(--ind-primary));}
.ind-cap-ico{font-size:18px;line-height:1;}
.ind-cap-txt{font-size:10px;font-weight:700;}
.ind-card-overlay{position:fixed;inset:0;background:rgba(8,16,28,.6);z-index:140;display:flex;align-items:center;justify-content:center;}
.ind-card-overlay[hidden]{display:none;}
.ind-card-box{position:relative;background:#fff;border-radius:12px;padding:10px;box-shadow:var(--ind-shadow);}
.ind-card-img{width:300px;height:500px;object-fit:contain;border-radius:6px;}
.ind-card-close{position:absolute;top:-12px;right:-12px;width:32px;height:32px;border-radius:50%;border:none;background:#fff;color:var(--ind-ink);font-size:18px;cursor:pointer;box-shadow:var(--ind-shadow);}

/* ===== Error ===== */
.ind-error-wrap{padding:80px 24px;text-align:center;}
.ind-error-code{font-size:72px;color:var(--ind-primary);margin:0;}
.ind-error-msg{color:var(--ind-muted);margin:10px 0 26px;}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .ind-article-layout{grid-template-columns:1fr;}
  .ind-list-layout .ind-layout-grid,.ind-list-layout{grid-template-columns:1fr;}
  .ind-toc-aside{position:static;max-height:none;margin-top:18px;}
  .ind-baseline-layout{grid-template-columns:1fr;}
  .ind-prod-grid{grid-template-columns:repeat(2,1fr);}
  .ind-card-grid-3{grid-template-columns:repeat(2,1fr);}
  .ind-nav{position:absolute;top:var(--ind-header-h);left:0;right:0;background:#fff;border-bottom:1px solid var(--ind-border);
    display:none;flex-direction:column;padding:8px 0;box-shadow:var(--ind-shadow);}
  .ind-nav.ind-open{display:flex;}
  .ind-nav-list{flex-direction:column;width:100%;gap:0;}
  .ind-nav-item{width:100%;}
  .ind-has-sub{flex-direction:column;align-items:stretch;}
  .ind-nav-link,.ind-nav-item>a{padding:12px 20px;border-radius:0;}
  .ind-nav-subtoggle{display:block;position:absolute;right:14px;top:6px;}
  .ind-nav-sub{position:static;display:none;box-shadow:none;border:none;border-radius:0;background:var(--ind-bg);padding:0 0 6px;}
  .ind-has-sub.ind-sub-open .ind-nav-sub{display:flex;}
  .ind-nav-toggle{display:block;}
  .ind-hero-title{font-size:30px;}
}
@media (max-width:680px){
  .ind-container{padding:0 16px;}
  .ind-card-grid,.ind-card-grid-3,.ind-prod-grid,.ind-archive-groups{grid-template-columns:1fr;}
  .ind-archive-list{columns:1;}
  .ind-footer-cols{grid-template-columns:1fr 1fr;}
  .ind-hero-title{font-size:26px;}
  .ind-capsule{right:10px;}
  .ind-cap-btn{width:48px;height:48px;}
}